From: Chengwen Feng <fengchengwen@huawei.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
"Rafael J . Wysocki" <rafael@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>, WANG Xuerui <kernel@xen0n.name>,
Thomas Gleixner <tglx@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H . Peter Anvin" <hpa@zytor.com>,
Juergen Gross <jgross@suse.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Len Brown <lenb@kernel.org>, Sunil V L <sunilvl@ventanamicro.com>,
Mark Rutland <mark.rutland@arm.com>,
Jonathan Cameron <jonathan.cameron@huawei.com>,
Kees Cook <kees@kernel.org>, Yanteng Si <si.yanteng@linux.dev>,
Sean Christopherson <seanjc@google.com>,
Kai Huang <kai.huang@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Thomas Huth <thuth@redhat.com>,
Thorsten Blum <thorsten.blum@linux.dev>,
Kevin Loughlin <kevinloughlin@google.com>,
Zheyun Shen <szy0127@sjtu.edu.cn>,
Peter Zijlstra <peterz@infradead.org>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Xin Li <xin@zytor.com>, "Ahmed S . Darwish" <darwi@linutronix.de>,
Sohil Mehta <sohil.mehta@intel.com>,
Ilkka Koskinen <ilkka@os.amperecomputing.com>,
Robin Murphy <robin.murphy@arm.com>,
James Clark <james.clark@linaro.org>,
Besar Wicaksono <bwicaksono@nvidia.com>,
Ma Ke <make24@iscas.ac.cn>, Wei Huang <wei.huang2@amd.com>,
Andy Gospodarek <andrew.gospodarek@broadcom.com>,
Somnath Kotur <somnath.kotur@broadcom.com>,
<punit.agrawal@oss.qualcomm.com>, <guohanjun@huawei.com>,
<suzuki.poulose@arm.com>, <ryan.roberts@arm.com>,
<chenl311@chinatelecom.cn>, <masahiroy@kernel.org>,
<wangyuquan1236@phytium.com.cn>, <anshuman.khandual@arm.com>,
<heinrich.schuchardt@canonical.com>, <Eric.VanTassell@amd.com>,
<wangzhou1@hisilicon.com>, <wanghuiqiang@huawei.com>,
<liuyonglong@huawei.com>, <fengchengwen@huawei.com>,
<linux-pci@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<loongarch@lists.linux.dev>, <linux-riscv@lists.infradead.org>,
<xen-devel@lists.xenproject.org>, <linux-acpi@vger.kernel.org>,
<linux-perf-users@vger.kernel.org>, <stable@vger.kernel.org>,
<x86@kernel.org>
Subject: [PATCH RESEND v10 0/8] ACPI: Unify CPU UID interface and fix ARM64 TPH steer-tag issue
Date: Wed, 1 Apr 2026 16:16:32 +0800 [thread overview]
Message-ID: <20260401081640.26875-1-fengchengwen@huawei.com> (raw)
This patchset unifies ACPI Processor UID retrieval across
arm64/loongarch/riscv/x86 via acpi_get_cpu_uid() (with input validation)
and fixes ARM64 CPU steer-tag retrieval failure in PCI/TPH:
1-4: Add acpi_get_cpu_uid() for arm64/loongarch/riscv/x86 (update
respective users)
5: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h
6: Clean up perf/arm_cspmu
7: Clean up ACPI/PPTT and remove unused get_acpi_id_for_cpu()
8: Pass ACPI Processor UID to Cache Locality _DSM
The interface refactor ensures consistent CPU UID retrieval across
architectures (no functional changes for valid inputs) and provides the
unified interface required for the ARM64 TPH fix
---
Changes in v10-resend:
- Add Catalin's ack-by for arm64 commit
- Add CC to x86@kernel.org
Changes in v10:
- Refine commit header&log according to Punit's and Bjorn's review
- Split perf/arm_cspmu as a separate commit which address Punit's
review
Changes in v9:
- Address Bjorn's review: split commits to each platform so that make
them easy to review
Changes in v8:
- Moving arm64's get_cpu_for_acpi_id() to kernel/acpi.c which address
Jeremy's review
Chengwen Feng (8):
arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID
retrieval
x86/acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
ACPI: Centralize acpi_get_cpu_uid() declaration in
include/linux/acpi.h
perf: arm_cspmu: Switch to acpi_get_cpu_uid() from
get_acpi_id_for_cpu()
ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()
PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM
Documentation/PCI/tph.rst | 4 +--
arch/arm64/include/asm/acpi.h | 17 +---------
arch/arm64/kernel/acpi.c | 30 ++++++++++++++++++
arch/loongarch/include/asm/acpi.h | 5 ---
arch/loongarch/kernel/acpi.c | 9 ++++++
arch/riscv/include/asm/acpi.h | 4 ---
arch/riscv/kernel/acpi.c | 16 ++++++++++
arch/riscv/kernel/acpi_numa.c | 9 ++++--
arch/x86/include/asm/cpu.h | 1 -
arch/x86/include/asm/smp.h | 1 -
arch/x86/kernel/acpi/boot.c | 20 ++++++++++++
arch/x86/xen/enlighten_hvm.c | 5 +--
drivers/acpi/pptt.c | 50 ++++++++++++++++++++++--------
drivers/acpi/riscv/rhct.c | 7 ++++-
drivers/pci/tph.c | 16 +++++++---
drivers/perf/arm_cspmu/arm_cspmu.c | 6 ++--
include/linux/acpi.h | 11 +++++++
include/linux/pci-tph.h | 4 +--
18 files changed, 158 insertions(+), 57 deletions(-)
--
2.17.1
next reply other threads:[~2026-04-01 8:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-01 8:16 Chengwen Feng [this message]
2026-04-01 8:16 ` [PATCH RESEND v10 1/8] arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 2/8] LoongArch: " Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 3/8] RISC-V: ACPI: " Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 4/8] x86/acpi: " Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 5/8] ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 6/8] perf: arm_cspmu: Switch to acpi_get_cpu_uid() from get_acpi_id_for_cpu() Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 7/8] ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu() Chengwen Feng
2026-04-01 8:16 ` [PATCH RESEND v10 8/8] PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM Chengwen Feng
2026-04-06 14:58 ` [PATCH RESEND v10 0/8] ACPI: Unify CPU UID interface and fix ARM64 TPH steer-tag issue Rafael J. Wysocki
2026-04-30 3:25 ` patchwork-bot+linux-riscv
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